Berkshire 4 bed detached house close to Legoland/London/train line/country

We are looking ideally for a beach swap or Ireland (kerry ideally) for one week August 18th x 1 week.We have a lovely family home and a small dog which we can organise to be looked after or you can bring yours to us.Close to lots of leisure amenitities shopping days out message me for further details as we have never done this before.